Balanced steam fitting or joint for journals of rotary steam-cylinders.



A. ALDRICH.

BALANCED STEAM FITTING 0R JOINT FOR JOURNALS 0F ROTARY STEAM CYLINDERS.

APPLICATION FILED JAN. 18. 1909.

967,294. A Patented Aug. 16,1910.

ALONZO ALDRICH, F IBELOIT, WISCONSIN.

BALANCED STEAM FITTING 0R JOINT FOR JOURNALS 0F ROTARY STEAM-CYLINDERS.

joints for the journals of rotary steam cyl-.

inders or' other revolving bodies and embodies improvements over theconstruction shown, described and claimed in my Patent No. 879,845,granted to me Feb. 25, 1908.

The object of the invention is to provide a balanced steam fitting orjoint for the journals of rotary steam cylinders, such, for

instance, as are employed for making paper, or for otherpurposes.

Other objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination,location and relative arrangement of parts, all as will be more fullyhereinafter set forth, as shown in the accompanying drawing, and finallypointed out in thea'ppended claims.

Referring tothe drawing and to the various views and reference signsappearing thereon,Figure l is a View in end elevation of a fitting orjoint for journals embodying the principles of my invention. Fig. 2 is aview in section on the line 2, 2, Fig. 1, looking in the direction ofthe arrows. Fig. 3 is a view in section on the line 3, 3, Fig. 2,looking in the direction of the arrows.

The same part is designated by the. same reference sign wherever itoccurs throughout the several views.

In my prior patent, above referred to, I have shown, descrlbei andclaimed a construction of fitting or joint for journals for revolvingsteam cylinders wherein provision is made for a relative axial movementof the fitting in its bearing seat in order to compensate for expansionor contraction of the pipes employed to deliver the steam to or from therotary cylinder. In the construction referred to, the hollow journal A,of the cylinder is formed on its outer end surface with a bearing seator surface C, to receive a cooperating bearing surface D, of a fittingE, these bearing surfaces being preferably ground to form a steam tightjoint, while at the same time permitting slight rotary displacement ofthe bearing- Specification of Letters Patent,

\ Application filed January 18, 1909.

Patented Aug. f6, 1910.. Serial No. 472,800.

surface of fitting E, in axial relation with respect to the cylinder orjournal sea-t. T he fitting E, is held to its seat by means of a collarF, carrying bolts (i, which extend through ears formed on the fitting E,and springs or other means K, interposed be tween nuts J, on the ends ofthe bolts and the fitting E, serve toefiiciently press the fitting seatD, against its cooperating seat C. The collar F, engages against therear wall of the head of the hollow journal in which the seat 0, isformed.

The fitting E, is provided with a portion extending laterally withreference to the bearing seat D, and is provided with a passage M, oflarge area, delivering through an opening O,formed through the bearingseat D, and into the hollow journal A, and thence into the cylinder. Apipe P, communicating at one end with a smaller passage N, in thefitting E, extends through the opening 0, and the hollow journal intothe cylinder. Supply and exhaust pipes A, B, are suitably connected tothe outer end of the fitting and communicate respectively with the pasreative rotative movement of the fitting with relation to said pipes.

From the foregoing description it will be seen that a structure ofjournal bearing for rotating steam cylinders is provided wherein anyexpansion r contraction of the supply and exhaust pipes, or any settlingor dis placement of the mains is accommodated without impairing theefficiency of the joints.

In the practical operation of a joint as above described it will bereadily seen that the steam pressure on the fitting E, as defined by thearea of the opening 0, tends to forcethe fitting in a direction to causethe collar F, to be drawn tightly against the rear or inner walls L, ofthe head H, in the outer end surface of which the seat C, is formed.This pressure is transmitted to the collar F, through the yoke bolts G,and as a result objectionable friction is developed tending to impairthe efliciency of the apparatus.

It is among the special purposes of the present invention to overcomeand avoid this objection, and to provide means whereby the bearing ofthe collar against the head of the hollow journal is relieved ofunnecessary and undue pressure, thereby forming a balanced steam fittingand greatly reducing the friction of operation, and hence sesa es M, N,in such manner as to provide curing greater efliciency in operation. Inaccomplishing these purposes and objects I provide the face of collar F,which bears against the rear wall L, of the head H, with a groove orchannel or other form of opening R, preferably equal in area to the areaof opening 0, and I form ducts or passages S, from the opening 0, orpassage through which the steam is admitted to the cylinder, said ductsS, being formed through thehead H, and delivering to the groove orchannel R, thereby permitting steam pressure equal to that imposed onthe fitting E, tending to draw the collar a ainst its bearing on thehead of the journal, to be exerted upon said collar tending to force itaway from said bearing, thereby producing a balanced structure andrelieving the journal of undue friction.

Having now set forth the object and nature of'my invention and aconstruction embodying the principles thereof, what I claim as new anduseful and of my own invention, and desire to secure by Letters Patentis 1. In a steam fitting or joint for journals, the combination with ahollow journal, a relatively movable fitting having a steam jointbearing against said journal a steam pipe connection delivering throughthe fitting and journal, a collar and connections between the collar andfitting to maintain said joint steam tight, and means for balancing thepressure on said collar.

2. The combination with a journal having a bearing seat in the endthereof, a fitting adapted to said seat said seat and fitting havingregistering .steam passages therethrough, a collar engaging the journaland connected to the fitting tomaintain the latter in its seat, andmeans for balancing the pressure on said collar.

3. The combination with a journal having a head, a rotatively movablesteam fitting seated against the front wall of said head said head andfitting having registering steam passages therethrough, a collar bearingagainst the rear wall of said head and serving to retain the fitting toits seat and means for balancing the pressure on said collar.

4. The combination with a journal havin a head, a rotatively movablefitting seate against the front wall of said headsaid head and fittinghaving registering steam passages therethrough, a retaining collartherefor seated against the rear wall of said head, and means foradmitting steam pressure to the bearingsurfaces of said collar and head.

5. The combination with a hollow journal having a head, a fitting seatedagainst said head and having a steam passage registering with the boreof the journal, a collar engaging the rear wall of the head and havingconnection with the fitting, a steam space between the bearing surfacesof the head and collar, and means for admitting steam from said steampassage to said space.

6. The combination with a journal having a head, a fitting seatedagainst said head and provided with a steam passage delivering throughthe head, a retaining collar engaging the rear wall of the head andconnected to the fitting, a steam space formed in the bearing surfacesof said collar and head and equal in area to the area of said passageand means for delivering steam from said passage to the steam space.

7 The combination with a journal having a head, a fitting seated againstsaid head and mounted for slight axial movement relative thereto saidhead and fitting having registering steam passages therethrough, acollar engaging the rear wall of said head and connected to said fittingand means for admitting steam to the bearing surfaces of the collar andhead.

8. The combination with a hollow journal having a head, a fitting seatedagainst said head said fitting having a steam Ipassage therethrough toregister with the ore of said head, acollar having a channel in the facethereof, and bearing against the rear wall of said head, connectionsbetween said collar and fitting, and ducts formed in said head anddelivering from the bore thereof to said channel.

9. The combination with a hollow journal having a head, a fitting seatedagainst said head and having a steam passage delivering through the boreof said journal, said fitting mounted for slight axial movement withreference to its seat against said head, a retaining collar engaging therear wall of said head and connected to said fitting, said collar havinga channel in the face thereof which bears against the head, said headhaving ducts delivering from the bore thereof to said channel.

In testimony whereof I have hereunto set my hand in the presence of thesubscribing witnesses, on this 12th day of January A. D., 1909.

ALONZO ALDRICH.

Witnesses:

J. A. J ANVRIN, H. C. GOVE.

